A Mysterious Object Has Been Orbiting Earth For 50 Years – And Experts Still Aren’t Sure What It Is

The year is 1899, and Nikola Tesla is checking the signals received by the massive radio tower that he’s built on the roof of his Colorado Springs laboratory-cum-home. Incredibly, the famous scientist has picked up mysterious signals – which he ultimately decides are from Mars. Others, however, later claim that the signals actually came from an enigmatic 13,000-year-old alien object orbiting the Earth.